feat: Implement POST /lobby/:id endpoint

[darren2hang]

Features

• Created lobby/id POST endpoint that can be used to add a user to a lobby
• The lobby token must be placed in req.body.lobbyToken and when decoded much match the lobby id in the query params
• The user token must be in present as a bearer in the authorization section
• Note: if an user is already in the lobby and an invalid lobby token is provided, an error will be returned
• Please use the GET endpoint instead to see if an user is in an lobby

Breaking Changes

• The validateJwt function now puts the decoded user id into req.body.userId not req.body.id

closes #27

[mergify[bot]]

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[mergify[bot]]

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